PHP have several functions for Quoting and Unquoting the string. These functions are used while we want to insert the data or fetching the data from the database. This will work against the SQL Injection. Please note that these functions will not remove the SQL Injection attack, there are several other GOOD methods available to remove the SQL Injection Like PDO.
PHP has several ways to output the string. Most commanly used function is echo. Lets get into all PHP String output Functions.
PHP has four functions to perform the trimming functionality on string.
Here are the functions for trimming operation on string. trim(), ltrim(), rtrim(), chop()
PHP has four functions for encoding and decoding the strings. Below are those functions.
convert_uudecode(), convert_uuencode(), quoted_printable_decode(), quoted_printable_encode()
In most cases we have to find the information related to string like string length, get words counts, etc.
PHP has a bunch of functions which used to get the infomation from the string. Below are those functions:
strlen(), count_chars(), str_word_count(), substr_count(), chr(), ord()
